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Statement of a problem № 3777

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A potential difference of 220 V is maintained across a 12,000 S rheostat ab (see Fig. 12.20). The voltmeter V has a resistance of 6000 S and point c is at one-fourth the distance from a to b. What is the reading in the voltmeter?

Solution:
A potential difference of 220 V is maintained across a 12,000 S rheostat ab (see

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